Cultivator.



V. WIDDER.

GULTIVATOR.

APPLICATION FILED we. 23, 1911.

1,013,710. Patehted 1111.2, 1912.

amoewboz Wine/ch l/zl'dde r. mu/[Means COLUMBIA PLANpGRAPH c0.WASHINGTON. n. c

union.

.VINCENZ WIDDER, OF RIEDLINGEN, GERMANY.

CULTIVATOR.

To all whom it may concern:

Be it known that I, VINoENz WVIDDER, a subject of the German Empire, andresident of Riedlingen, lVurttemberg, Germany, have invented certain newand useful Improvements in or Relating to Cultivators, of which thefollowing is a specification.

This invention has reference to improvements in cultivators and itsobject is to provide means for mounting the tools, whereby when anobstruction is encountered the tool supports will yield and avoiddamaging the parts.

According to my invention I provide a resilient element which cooperateswith a resilient tool support tomaintain the latter in normal position,but when an obstacle is encountered the resilient element will yield andthereby permit the tool support to yield and allow the tool to pass overthe obstruction.

In the accompanying drawings: Figure 1 is a side elevation illustratingthe application of the invention, the dotted lines showing the positionof the parts when the tool encounters an obstruction. Fig. 2 is asimilar view, but illustrating the position of the parts when the toolis held by the obstruction. Fig. 3 is a side elevation of a slightlydifferent form of the invention. Fig. 4 is a side elevation of the formof the invention shown in Fig. 3, the tool being in contact with theobstruction.

6 indicates a tool mounted on a resilient blade a, the latter being ofogee form in outline and formed with a horizontal rearward extension, toprovide means for fastening it to the frame of the machine.

0 in Figs. 1 and 2 indicates an abutment secured to the machine frameand extending under the horizontal rearward extension.

7) designates a resilient blade supporting element, the lower end ofwhich is secured to the rear lower end of the resilient blade back ofthe tool e. This is curved and its upper end (Z projects forward andnormally fits against the abutment c and serves to brace and steady theresilient blade, except when the tool strikes an unusual abutment. Theextension of the resilient blade supporting element is such that its end(Z will tend to spring up against the extension of the blade support,and fit snugly behind the abutment c.

When the tool 6 encounters an obstruction the resilient element 6 willyield and Specification of Letters Patent.

Application filed August 23, 1911.

Patented Jan. 2,1912.

Serial No. 645,629.

its end (Z will become disengaged from the abutment 0, and the resilientsupporting blade will be permitted to yield as shown in Fig. 2, andthereby avoid breaking of the parts.

It may happen that the resilient blade supporting element Z) will notreturn to its operative position behind the abutment after it has beenreleased, owing to the play necessary between the end d and the abutmentc, which results in undue wear on the parts. In order to avoid thisdifliculty the means shown in Fig. 4 may be provided. In thisconstruction the upper end of the supporting element 6 is provided withan eye d in which is pivotally mounted a link The link f also engages abracket 0 mounted under the extension of the resilient blade, and heldin position by a bar it. This bracket also forms an abutment. Owing tothis arrangement a hinged connection is provided between the resilientsupporting blade and supporting element 6. By this construction thesupporting element 6 will always be returned automatically to its normalposition.

When the plowshare, tine, or the like meets with an abnormal resistance,as for example in encountering a stone, root of a tree or otherobstruction, it assumes the position shown in dotted lines in Fig. 3.The upper portion of the supporting element 6 bears against theextension of the resilient blade at, and its outer end tends to curvedownwardly. As the resistance increases the curvature of the supportingelement also increases and the link turns to the position shown in Fig.4. As the tension of the resilient element 7) tends to force the upperend rearwardly, the link and the element 6 will be automaticallyreturned to normal position as soon as the obstruction is passed.

I wish it to be understood that certain details of construction devicemav be changed without departing from the spirit and scope of myinvention.

Having now fully described my invention, what I claim and desire tosecure by Letters Patent is: V

1. The combination with a cultivator frame, of a normallv inclined toolmounted on downwardly inclined resilient carrving means, said carryingmeans being braced by a resilient stav flexibly maintaining said tool inan inclined position, said resilient stay having disengaging means topermit free movement of the tool when the latter strikes an obstruction,whereby said tool may pass over said obstruction without damage.

2. The combination with a cultivator frame, of a tool mounted on adownwardly inclined spring blade, having a horizontal and rearwardextending upper end which is fixed 011 said frame' and a spring bladesupport secured at its lower end to the lower rear portion of the springblade, the upper 'end of the spring blade support terminating below thehorizontal and rearward extension of the upper end of the main springblade and against a fixed abutment on the cultivator frame.

3. The combination with a cultivator frame, of a tool mounted on adownwardly inclined spring blade, having a horizontal rearward.extending upper end which is fixed on said. frame, a spring bladesupport secured atits lower end to the rear blade of the spring bladebehind the tool, the upper end of the spring blade support terminatingbelow the horizontal and rearward extension of the spring blade andagainst a fixed abutment provided on the cultivator frame, and means forguiding the abutment end of the spring blade support when the tool ismoved by an obstruction.

4. The combination with a cultivator frame, of a tool mounted on adownwardly inclined spring blade, having a horizontal rearward extendingupper end which is fixed 011 said frame, a spring blade support formedwith an eye and secured at its lower end to the lower rear portion ofthe spring blade behind the tool, the upper end of the spring bladesupport terminating below the horizontal rearward extension of thespring blade and against a fixed abutment on the cultivator frame, abracket secured under the horizontal rearward extension of the springblade to provide an abutment, and a 'link connecting said bracket withthe eye support secured to the frame and a resilient member fastened tothe resilient tool support and having its free upper end normally inengagement with the abutment but adapted to be disengaged to permit theresilient tool support to yield when an obstacle is encountered.

6. The combination of a cultivator frame provided with an abutment, aresilient tool support secured to the frame, a resilient member fastenedto the resilient too'l support and having one end normally in engagementwith the abutment and means for hinging the abutment end of theresilient member to the frame, whereby when the resilient supportencounters an abnormal resistance the resilient member will becomedisengaged from the abutment and the hinged end will rock.

7. The combination of a cultivator frame, a resilient tool supportsecured thereto, an

abutment, a resilient member having one end secured and its opposite endnormally engaging the abutment, whereby when the resilient tool supportencounters an abnormal resistance the end of the resilient member willbecome disengaged from the abutment.

In testimony whereof I have hereunto set my hand in presence of twowitnesses.

VINCENZ WIDDER. Witnesses PAULINE KLAIBER, FRIDA KLAIBER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

